Very Hard Difficulty

First release for Minecraft 1.20.1.

- Vanilla-style "Very Hard" difficulty in the world creation and difficulty menus — no commands needed.
- 16 gameplay changes: shield leak and guard-breaking heavy hits, faster hunger drain, costlier health regeneration, faster armor wear, zombie hordes and climbing, predictive skeleton aim and tipped arrows, creeper shockwave debuffs, enderman flanking, phantom shield knock and earlier spawns, fall Slowness, freezing biome penalty, Nether weakness.
- 10 vanilla-style advancements with a lava-backed tab.
- Every feature can be toggled in `config/very_hard_config.json`.
- Requires Java 17; runs on servers with Java 17+.